TWM602115U - Auxiliary power supply device of electric vehicle - Google Patents

Abstract

The auxiliary power supply device for the electric car of this invention is assembled on an electric car with a motor, and includes: a power battery, an auxiliary battery and a logic control unit. Among them, the power battery provides the power required for the operation of the motor; the auxiliary battery is electrically connected to the power battery, and when the power of the power battery is turned off, the auxiliary battery can provide the power required for the electric vehicle to communicate with the outside; the logic control unit The power battery and the auxiliary battery are electrically connected. When the power battery capacity measured by the logic control unit is greater than a predetermined rechargeable value, and the electrical capacity measured by the auxiliary battery is less than a predetermined value to be charged, the logic control unit controls The power battery charges the auxiliary battery. In this way, it can be solved that the owner of the electric vehicle does not use it for a long time, and the communication and control module causes the auxiliary battery to run out, which causes the vehicle to lose communication with the back-end operating platform or the owner, thereby causing the system to fail to operate.

Description

Auxiliary power supply device for electric vehicle

This creation is about an auxiliary power supply device, especially an auxiliary power supply device suitable for electric vehicles.

The so-called electric vehicles currently on the market use electricity as a source of power and transfer the electricity to a motor so that the electric vehicle can move forward. The power source is the battery provided on the electric vehicle.

With the recent development of electric vehicles, with the intelligent evolution of four-wheeled vehicles, two-wheeled vehicles have also added control modules with various functions to increase customers' technological experience, such as wireless communication functions such as GSM, RF, and Bluetooth. Electric vehicles still need to be remotely controlled and communicated when the owner leaves after the main power supply is turned off. That is, the electric vehicle needs to be under the condition that the auxiliary battery cannot be cut off in order to maintain the main power of the electric vehicle. Remote control and communication operation of the platform to the vehicle.

Most electric vehicles use a small lead-acid battery installed on the vehicle or add a small lithium battery to provide peripheral power requirements, which are called auxiliary batteries. The auxiliary battery will only use the power battery or charger to supplement the power supply when the whole vehicle is driving or the whole vehicle is charging, and does not supplement the power of the auxiliary battery in the non-driving and non-charging state.

When the main power of the system is shut down but the communication function continues to operate and communicate with the external platform, it will continue to consume the power of the auxiliary battery. Once the standby time is too long, the auxiliary battery power will eventually be exhausted, and the electric vehicle will lose communication with the back-end operating platform or the owner. As a result, the system cannot work due to the connection, which is not very ideal, and there is room for improvement.

This is the reason for the creation. Based on the spirit of active invention and creation, I was eager to think of a "auxiliary power supply device for electric vehicles" that could solve the above problems. After several research experiments, I finally completed this creation.

The auxiliary power supply device of this creative electric vehicle is designed to solve the problem that the communication and control module causes the auxiliary battery to be exhausted due to the long-time non-use of the electric vehicle owner, which causes the electric vehicle to lose communication with the back-end operating platform or the vehicle owner and cause the system to fail The absence. Because the power battery capacity of an electric vehicle is much larger than the auxiliary battery several times, this creation uses the logic control unit to detect that the auxiliary battery capacity is insufficient, and turns on the self-charging mode, and the power battery is turned on for a period of time to supplement the auxiliary battery's capacity. When the auxiliary battery is charged to the set capacity, the power battery will be turned off to prevent the power battery from wasting electric energy. If the power battery capacity is lower than a set capacity, the automatic supplement function will be suspended, and the communication function configuration will be added. When the battery capacity is low, notify the owner or the operating platform to remind the owner or operating platform to supplement energy.

In order to achieve the above-mentioned purpose, the auxiliary power supply device of the electric vehicle of the invention is assembled on an electric vehicle with a motor, and includes: a power battery, an auxiliary battery and a logic control unit. Among them, the power battery provides the power required for the operation of the motor; the auxiliary battery is electrically connected to the power battery, and when the power of the power battery is turned off, the auxiliary battery can provide the power required for the electric vehicle to communicate with the outside; the logic control unit The power battery and the auxiliary battery are electrically connected, and when the logic control unit measures the power battery's electric capacity to be greater than a predetermined chargeable value, and the measured electric capacity of the auxiliary battery is less than a chargeable predetermined value, the logic control The unit controls the power battery to charge the auxiliary battery.

For the above-mentioned power battery, the rechargeable predetermined value can be set to 20% of the power battery's capacity, or 25% or 15% of the power battery's capacity, both of which can achieve the purpose of this creation.

For the above-mentioned auxiliary battery, the predetermined value to be charged can be set to 20% of the auxiliary battery's electric capacity, or 25% or 15% of the auxiliary battery's electric capacity, both of which can achieve the purpose of this creation.

In the above-mentioned auxiliary power supply device, when the power battery capacity measured by the logic control unit is less than or equal to the rechargeable predetermined value, the logic control unit controls the power battery not to charge the auxiliary battery, so as to save the power of the power battery and avoid the power battery Without electricity, the electric car cannot run.

In the above-mentioned auxiliary power supply device, when the logic control unit measures the electric capacity of the power battery to be greater than the rechargeable predetermined value, and the measured electrical capacity of the auxiliary battery is greater than or equal to the predetermined rechargeable value, the logic control unit controls the power battery Do not charge the auxiliary battery. At this time, the auxiliary battery still has power and does not need to be charged.

In the above-mentioned auxiliary power supply device, when the power battery charges the auxiliary battery to 90% of the auxiliary battery's electric capacity, the power battery no longer charges the auxiliary battery to save the power of the power battery.

In the above-mentioned auxiliary power supply device, when the logic control unit measures the electric capacity of the power battery to be less than or equal to the rechargeable predetermined value, the logic control unit will notify the owner of the electric vehicle through wireless communication that an external power source is required to charge the power battery Recharge.

The auxiliary battery may be a small lead-acid battery or a small lithium battery, and the power battery may be a large lithium battery or a power battery pack composed of multiple lithium batteries connected in series.

The above-mentioned electric vehicle can be an electric vehicle or an electric vehicle, that is, the auxiliary power supply device for the electric vehicle of the invention can be applied to two-wheel electric vehicles and four-wheel electric vehicles.

The above summary and the following detailed description are exemplary in nature to further illustrate the scope of patent application of the present invention. The other objectives and advantages of the present invention will be explained in the following description and illustrations.

Please refer to FIG. 1, FIG. 2 and FIG. 3, which are respectively a schematic diagram of a plan configuration of an auxiliary power supply device of an electric vehicle according to a preferred embodiment, a diagram of system configuration and a flow chart of determination. The auxiliary power supply device of the electric vehicle in this embodiment is assembled on an electric vehicle having a motor 25. The auxiliary power supply device includes a power battery 20, an auxiliary battery 30, and a logic control unit 10. Among them, the power battery 20 provides the power required for the operation of the motor 25; the auxiliary battery 30 is electrically connected to the power battery 20. When the power of the power battery 20 is turned off, the auxiliary battery 30 can provide the power required for the electric vehicle and external communication. The logic control unit 10 is electrically connected to the power battery 20 and the auxiliary battery 30. When the logic control unit 10 measures the electric capacity of the power battery 20 to be greater than a predetermined chargeable value, and the logic control unit 10 measures the electric capacity of the auxiliary battery 30 to be less than a required value. When the predetermined value is charged, the logic control unit 10 controls the power battery 20 to charge the auxiliary battery 30.

In this embodiment, the chargeable predetermined value of the electric capacity of the power battery 20 is set to 20%, and the chargeable predetermined value of the electric capacity of the auxiliary battery 30 is also set to 20%, that is, when the logic control unit 10 measures the power The electric capacity of the battery 20 is greater than 20%, which means that the electric capacity of the power battery 20 is sufficient, and the logic control unit 10 measures the electric capacity of the auxiliary battery 30 to be less than 20%, indicating that the electric capacity of the auxiliary battery 30 is insufficient and needs to be charged. At this time, logic control The unit 10 controls the power battery 20 to charge the auxiliary battery 30.

As shown in FIG. 3, the operation of the auxiliary power supply device of the electric vehicle of this embodiment starts from the initial state of the system. First, the logic control unit 10 measures the power of the power battery 20 and the auxiliary battery 30. Then, it is judged whether the electric capacity of the power battery 20 is greater than 20% and the electric capacity of the auxiliary battery 30 is judged to be less than 20%. If both are both, proceed to the next step, the power battery 20 charges the auxiliary battery 30, if not , That is, when any condition is not met, the logic control unit 10 returns to the stage of measuring the power of the power battery 20 and the auxiliary battery 30.

Next, after the power battery 20 charges the auxiliary battery 30, it is judged whether the electric capacity of the auxiliary battery 30 is greater than 90%. If yes, proceed to the next step, stop charging and return to the start of the system, if not, return to the power battery 20 to the auxiliary battery During the charging phase 30, the power battery 20 continues to charge the auxiliary battery 30.

It can be seen from the foregoing judgment process that when the logic control unit 10 measures the electric capacity of the power battery 20 to be less than or equal to 20%, the logic control unit 10 controls the power battery 20 not to charge the auxiliary battery 30, which can save the power of the power battery 20 and avoid power The battery 20 is dead, and the electric vehicle cannot run. And when the electric capacity of the power battery 20 is less than or equal to 20%, the logic control unit 10 will notify the owner of the electric vehicle through the wireless communication interface 40, such as using GSM, RF, Bluetooth and other wireless communication functions to notify the owner’s mobile phone, It is reminded that the vehicle owner needs to use an external power source to charge the power battery 20.

In addition, when the logic control unit 10 measures the electric capacity of the power battery 20 to be greater than 20%, but the measured electric capacity of the auxiliary battery 30 is greater than or equal to 20%, the logic control unit 10 controls the power battery 20 not to charge the auxiliary battery 30, It means that the auxiliary battery 30 still has power at this time and does not need to be charged. In addition, when the power battery 20 charges the auxiliary battery 30 to 90% of the electric capacity of the auxiliary battery 30, the power battery 20 no longer charges the auxiliary battery 30, which can save the power of the power battery 20.

In this embodiment, the auxiliary battery 30 may be a small lead-acid battery or a small lithium battery, the power battery 20 may be a large lithium battery or a power battery pack formed by connecting multiple lithium batteries in series, and the electric vehicle may be an electric vehicle Or an electric car.

In this embodiment, when the logic control unit 10 detects that the auxiliary battery 30 is low in power, the self-charging mode is turned on, and the power battery 20 is turned on for a period of time to replenish the electric capacity of the auxiliary battery 30. When the auxiliary battery 30 is charged to the set electric capacity, The power battery 20 is turned off to prevent the power battery 20 from wasting electric energy, and when the power battery 20’s capacity is lower than a set amount of power, the automatic replenishment function is suspended, and a communication function configuration is added. When the power battery 20 is in low capacity, a notification The owner or operating platform reminds the owner or operating platform to supplement energy. In this way, it can be solved that the owner of the electric vehicle does not use it for a long time, and the communication and control module causes the auxiliary battery 30 to run out, causing the electric vehicle to lose communication with the back-end operating platform or the vehicle owner, thereby causing the system to fail to operate.

The above-mentioned embodiments are merely examples for the convenience of description, and the scope of rights claimed in this creation should be subject to the scope of the patent application, not limited to the above-mentioned embodiments.

10: Logic control unit 20: Power battery 25: Motor 30: auxiliary battery 40: wireless communication interface

FIG. 1 is a schematic diagram of a plan configuration of an auxiliary power supply device for an electric vehicle according to a preferred embodiment of the invention. Fig. 2 is a system configuration diagram of the auxiliary power supply device of an electric vehicle according to a preferred embodiment of the invention. Figure 3 is a flow chart of determining the auxiliary power supply device of an electric vehicle according to a preferred embodiment of the invention.

10: Logic control unit

20: Power battery

25: Motor

30: auxiliary battery

40: wireless communication interface

Claims (10)

An auxiliary power supply device for an electric vehicle, assembled on an electric vehicle with a motor, includes: A power battery to provide the power required by the motor during operation; An auxiliary battery, electrically connected to the power battery, when the power battery of the power battery is turned off, to provide the electric power required for communication between the electric vehicle and the outside; and A logic control unit, which is electrically connected to the power battery and the auxiliary battery, when the logic control unit measures that the power battery's electrical capacity is greater than a predetermined rechargeable value, and measures that the electrical capacity of the auxiliary battery is less than a predetermined rechargeable value When the time, the logic control unit controls the power battery to charge the auxiliary battery. For the auxiliary power supply device for electric vehicles as described in item 1 of the scope of patent application, the predetermined chargeable value refers to 20% of the electric capacity of the power battery. For example, the auxiliary power supply device for electric vehicles as described in item 1 of the scope of patent application, wherein the predetermined value to be charged refers to 20% of the electric capacity of the auxiliary battery. For example, the auxiliary power supply device for an electric vehicle described in the first item of the scope of patent application, wherein when the logic control unit measures that the power battery capacity is less than or equal to the rechargeable predetermined value, the logic control unit controls the power battery Do not charge the auxiliary battery. The auxiliary power supply device for an electric vehicle as described in the first item of the scope of patent application, wherein, when the logic control unit measures the electric capacity of the power battery to be greater than the rechargeable predetermined value, and measures the electric capacity of the auxiliary battery to be greater than When it is equal to the predetermined value for charging, the logic control unit controls the power battery not to charge the auxiliary battery. For example, the auxiliary power supply device for electric vehicles described in the first item of the scope of patent application, wherein when the power battery charges the auxiliary battery to 90% of the auxiliary battery's electric capacity, the auxiliary battery is no longer charged. For example, the auxiliary power supply device for an electric vehicle described in the scope of patent application, wherein, when the logic control unit measures that the power battery capacity is less than or equal to the pre-chargeable value, the logic control unit will wirelessly The communication interface informs the owner of the electric car. For example, the auxiliary power supply device for an electric vehicle as described in item 1 of the scope of patent application, wherein the auxiliary battery is a small lead-acid battery or a small lithium battery. The auxiliary power supply device for electric vehicles as described in item 1 of the scope of patent application, wherein the power battery is a large lithium battery. The auxiliary power supply device for an electric vehicle as described in item 1 of the scope of the patent application, wherein the electric vehicle is an electric vehicle or an electric vehicle.

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